Question 1

How often should I have my solar panels cleaned?

Accepted Answer

It varies depending on where you live and what’s around you. If you live near gravel lots, ball fields, trees or vegetation, those factors can make your panels dirty at different rates. I recommend cleaning your panels once a year—that way, you can keep track of any increases in energy production. If your production really slumps, I can bump up your service to twice a year.

Question 2

What kind of energy production should I see after my panels are clean?

Accepted Answer

It varies, but studies and customer feedback have shown a 10 to 30 percent increase in energy production from clean solar panels.

Question 3

What’s the best time to clean solar panels?

Accepted Answer

I prefer to do the work early in the day before it gets hot.

Question 4

Can you clean my panels if I have a tile roof?

Accepted Answer

Yes. Nine times out of 10, the safest way to clean panels is from the roof. Walking on tile roofs isn’t a problem if you know how to do it, and I have many years of experience.

Question 5

What do you use to clean solar panels?

Accepted Answer

I use deionized water and soft-bristle brushes, and my cleaning system is much more advanced than window washing equipment. It’s also important to note that I don’t use any cleaning solutions. Solar panel manufacturers recommend not using soaps or other cleaning solutions because they can leave a film that attracts dust, so I follow those recommendations to keep my clients’ panels clean for long periods of time.

Question 6

Can’t I just clean my panels myself or hire a window washer?

Accepted Answer

There are lots of hazards that come with solar panel cleaning and being on a roof in general. It’s not safe for most homeowners to be up on their roofs, and most handypeople and window washers don’t have specialized experience that lets them safely work on roofs or solar panels.

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